Jankowska P, Rudnicka-Drożak E. Physical activity and health behaviors of children from 4-6 classes of primary school living in the villages of the Lublin and Lodz voivodeships. J Educ Health Sport [Internet]. 2018 Aug. 9 [cited 2026 Feb. 7];8(8):642-9. Available from: https://apcz.umk.pl/JEHS/article/view/5782